* Adds Uid/Gid parameters to template.

* Updated diff_test

* fixed order

* update jobspec and api

* removed obsolete code

* helper functions for jobspec parse test

* updated documentation

* adjusted API jobs test.

* propagate uid/gid setting to job_endpoint

* adjusted job_endpoint tests

* making uid/gid into pointers

* refactor

* updated documentation

* updated documentation

* Update client/allocrunner/taskrunner/template/template_test.go
Co-authored-by: Luiz Aoqui <luiz@hashicorp.com>

* Update website/content/api-docs/json-jobs.mdx
Co-authored-by: Luiz Aoqui <luiz@hashicorp.com>

* propagating documentation change from Luiz

* formatting

* changelog entry

* changed changelog entry
Co-authored-by: Luiz Aoqui <luiz@hashicorp.com>